Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Fail-Safe Chart

FAIL-SAFE CHART

1. FAIL-SAFE FUNCTION
a. When communication fails in any of the CAN bus lines (communication lines) due to a short circuit or for another reason, the fail-safe function, which is specified for each system, operates to prevent the system from malfunctioning.




b. The fail-safe function activates on each system when communication is impossible. (For further details, refer to the relevant systems of each part.)

HINT:
- Fail-safe function operation during an A-B communication error is shown in the above chart.
- A: Main control system B: Related system